Epigenetic variation and inheritance in hatchery- and natural-origin Chinook and Coho salmon
PSSI Project Summary
Division: Aquatic Diagnostics, Genomics and Technology (ADGT)
Section: Molecular Genetics
Organization: DFO
Session(s): Hatchery Fitness And Genetics
Presentation Date(s): December 11, 2025
Speakers: Tim Healy, Kyle Wellband
Abstract:
There are few genetic differences between hatchery-bred and natural salmon in populations enhanced by the Salmonid Enhancement Program (SEP), but structural modifications to genes may affect gene expression and impact salmon fitness in the wild. This genetic sequencing study gathers Chinook samples from hatcheries at the Nicola, Quinsam, Sarita, Atnarko, and Chilliwack rivers to compare epigenetic (methylation) differences between hatchery and wild Chinook to better monitor the proportion of hatchery salmon in a river.